Tag: University of Washington

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Asteroid hunters make 27,500 new finds in old data

This visualization shows trajectories for scores of asteroids. (B612 Asteroid Institute / UW Dirac Institute / OpenSpace Project)

A team of asteroid hunters that includes researchers at the University of Washington says it has identified 27,500 new, high-confidence asteroid discovery candidates — not by making fresh observations of the night sky, but by sifting through archives of astronomical data.

The weeks-long database search was conducted by the Asteroid Institute, a program of the nonprofit B612 Foundation, in partnership with UW’s DiRAC Institute and Google Cloud.

The two institutes developed a program called THOR, which stands for “Tracklet-less Heliocentric Orbit Recovery.” THOR runs on a cloud-based, open-source platform known as ADAM (“Asteroid Discovery Analysis and Mapping”). The program can analyze the positions of millions of moving points of light observed in the sky over a given period of time, and link those points together in ways that are consistent with orbital paths.

Google Cloud’s Office of the CTO collaborated with the Asteroid Institute to fine-tune its algorithms for Google Cloud. The project analyzed 5.4 billion observations drawn from the NOIRLab Source Catalog Data Release 2.

“What is exciting is that we are using electrons in data centers, in addition to the usual photons in telescopes, to make astronomical discoveries,” Ed Lu, executive director of the Asteroid Institute, said in a news release.

Most of the 27,500 asteroid discovery candidates are in the main belt, between the orbits of Mars and Jupiter. But the candidates also include more than 100 apparent near-Earth asteroids.

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How to find signs of extraterrestrial life in a grain of ice

An artist’s conception shows NASA’s Europa Clipper probe flying over Europa. (NASA / JPL-Caltech Illustration)

Scientists have verified that a method to look for cellular life on Europa, an ice-covered moon of Jupiter, just might work. The technique could be put to the test in the 2030s, when NASA’s Europa Clipper probe is due to make multiple flybys over the Jovian moon.

The technique involves analyzing grains of ice that scientists expect one of the instruments on Europa Clipper — known as the Surface Dust Analyzer, or SUDA — to pick up as it flies through plumes of frozen water rising up from Europa’s surface.

“It’s astonishing how the analysis of these tiny ice grains may tell us whether or not there is life on an icy moon. At least we now know that SUDA has these capabilities,” University of Washington planetary scientist Fabian Klenner told me in an email. Klenner is the lead author of a research paper about the process, published today in the open-access journal Science Advances.

SUDA will be capable of analyzing the chemical content of material that hits its detector, using a process called impact ionization mass spectrometry. The key feature of the process described by Klenner and his colleagues is that the analysis would be done on single ice grains, rather than on a blizzard of ice particles. That way, scientists can focus on individual grains that might hold a high concentration of the ingredients of a single cell.

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Scientists back AI principles for biomolecular design

AI technologies now allow scientists to generate biomolecules unlike any seen in nature. (Illustration by Ian C. Haydon / UW IPD)

More than 90 researchers — including a Nobel laureate — have signed on to a call for the scientific community to follow a set of safety and security standards when using artificial intelligence to design synthetic proteins.

The community statement on the responsible development of AI for protein design is being unveiled today in Boston at Winter RosettaCon 2024, a conference focusing on biomolecular engineering. The statement follows up on an AI safety summit that was convened last October by the Institute for Protein Design at the University of Washington School of Medicine.

“I view this as a crucial step for the scientific community,” the institute’s director, David Baker, said in a news release. “The responsible use of AI for protein design will unlock new vaccines, medicines and sustainable materials that benefit the world. As scientists, we must ensure this happens while also minimizing the chance that our tools could ever be misused to cause harm.”

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Computer scientist goes from stunt flying to a startup

Computer scientist Cecilia Aragon tells her life story at the Women’s Leadership Conference. (GeekWire Photo / Alan Boyle)

BELLEVUE, Wash. — Three decades ago, Cecilia Aragon made aviation history as the first Latina to earn a place on the U.S. Unlimited Aerobatic Team.

She went on to write a book about it, titled “Flying Free.”

Today, she’s still flying free, as a professor and data scientist in the University of Washington — and as the co-founder of a Seattle startup that aims to commercialize her research.

Aragon recounted her personal journey today during a talk at the Women’s Leadership Conference, presented by the Bellevue Chamber. The conference brought nearly 400 attendees to Bellevue’s Meydenbauer Center to hear about topics ranging from financial literacy to sports management.

Aragon’s aerobatic days began in 1985, when she accepted an invitation from a co-worker to take a ride in his flying club’s Piper Cherokee airplane. “The first thing I thought was, ‘I’m the person who’s scared of climbing a stepladder. I’m scared of going in an elevator,’” she recalled.

But then she thought of her Chilean-born father. “I heard my father’s voice, saying, ‘What is stopping you from doing whatever you want?” she said. She swallowed her fears, climbed into the plane, and was instantly hooked.

“It’s so gorgeous to fly out into the water and see the sun glinting up on the water, like a million gold coins,” she said. “And when we got down to the ground, I said, ‘I want to take flying lessons. I want to be the pilot of my own life.’”

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Scientists take a freeze-frame look at excited electrons

Scientists used a pair of X-ray pulses (shown in pink and green) to study the energetic response of electrons (gold) in liquid water on attosecond time scales, while the hydrogen (white) and oxygen (red) atoms are ‘frozen’ in time. (Pacific Northwest National Laboratory / Nathan Johnson)

An international team of scientists has blazed a new trail for studying how atoms respond to radiation, by tracking the energetic movement of electrons when a sample of liquid water is blasted with X-rays.

The experiment, described in this week’s issue of the journal Science, required “freezing” the motion of the atoms with which the electrons were associated, on a scale of mere attoseconds. An attosecond is one-quintillionth of a second — or, expressed another way, a millionth of a trillionth of a second.

Attosecond-scale observations could provide scientists with new insights into how radiation exposure affects objects and people.

“What happens to an atom when it is struck by ionizing radiation, like an X-ray? Seeing the earliest stages of this process has long been a missing piece in understanding how radiation affects matter,” Xiaosong Li, a chemistry professor at the University of Washington and a laboratory fellow at the Pacific Northwest National Laboratory, said in a UW news release. “This new technique for the first time shows us that missing piece and opens the door to seeing the steps where so much complex — and interesting — chemistry occurs!”

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Scientists visit the kind of lake where life may have arisen

Researchers walk across Last Chance Lake’s crusty surface in September 2022. (UW Photo / Zack Cohen)

Several years ago, scientists at the University of Washington theorized that key ingredients for life could have built up billions of years ago in special kinds of environments known as soda lakes.

At the time, their hypothesis was based on previously published research, computer modeling and lab experiments. But now the same scientists say they’ve found a shallow lake that just might fit the requirements — and it happens to be just a few hundred miles north of their home base in Seattle.

Their findings, focusing on Last Chance Lake in British Columbia, were published this month in Communications Earth & Environment, an open-access, peer-reviewed scientific journal.

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Moon lander mission will carry DNA to the final frontier

Astrobotic’s Peregrine lander is prepared for placement within its launch vehicle’s fairing. (Astrobotic Photo)

A mission to send a commercial lander to the moon, set for launch in a couple of days, will bring the fruition of projects that have been in the works for years — including projects that aim to put DNA into cold storage on the final frontier.

Pittsburgh-based Astrobotic’s robotic Peregrine lander is scheduled to begin a circuitous 40-day trip to the moon with liftoff from Cape Canaveral Space Force Station in Florida at 2:18 a.m. ET Jan. 8 (11:18 p.m. PT Jan. 7). NASA TV will stream coverage of the countdown.

It’ll mark the first launch for United Launch Alliance’s next-generation Vulcan Centaur rocket, and the first use of the BE-4 engines built by Jeff Bezos’ Blue Origin space venture for Vulcan’s first-stage booster — coming nearly 10 years after the partnership between ULA and Blue Origin was announced.

A successful touchdown next month would go into the history books as the first soft landing of a commercially built spacecraft on the lunar surface — in fact, the first soft lunar landing of any U.S.-built spacecraft since Apollo 17 in 1972. Among the payloads placed aboard the lander is the Iris mini-rover, which would become the first U.S.-built vehicle to wheel around the moon since the Apollo era.

Several NASA-supported payloads will take measurements at the landing site, around a region known as the Gruithuisen Domes, during a science mission that’s projected to last a couple of weeks. Other payloads include micro-robots from Mexico, an art project called MoonArk, mementos and bits of cryptocurrency.

And then there’s the DNA. Samples of DNA — either contributed by donors or synthesized to contain coded information — will be riding on the Peregrine lander as well as the Vulcan’s Centaur V upper stage.

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NASA boosts far-out radio dishes and other wild ideas

This collage highlights several concepts proposed by 2024 NIAC Phase I awardees. (NASA Illustration)

A proposal to build a far-flung set of radio antennas to measure the cosmos is one of 13 far-out concepts to receive seed funding from the NASA Innovative Advanced Concepts program.

University of Washington astronomer Matthew McQuinn will receive a grant of $175,000 to flesh out his plan for a solar-system-scale interferometer capable of determining cosmological distances with precision that’s an order of magnitude beyond what’s possible today.

The plan would require building and launching a constellation of four radio dishes, each measuring at least several meters (yards) in diameter. The detectors would have to be widely separated, far out in deep space. How far out? “The science gets interesting when they are more than about 10 AU apart,” McQuinn told me in an email. That distance of 10 AU is just a bit less than the width of Jupiter’s orbit.

The detectors would be on the lookout for fast radio bursts that flash from beyond our Milky Way galaxy. By measuring the difference in arrival times at the different detectors, scientists could calculate the distance to the source of a burst with sub-percent precision. “It’s kind of like GPS localizations, but applied to fast radio bursts,” McQuinn explained.

In his proposal, McQuinn says such measurements could lead to new discoveries in fields ranging from gravitational-wave detection to the study of dark matter. McQuinn and a UW colleague, Kyle Boone, lay out the details in a research paper that was published last year in The Astrophysical Journal Letters.

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How rowing has changed since ‘The Boys in the Boat’

"The Boys in the Boats" recounts the saga of the University of Washington's rowing crew in 1936. (Image Copyright © Metro-Goldwyn-Mayer)

Thanks to tectonic shifts in technology and training, Olympic-level rowing has come a long way since the University of Washington’s eight-man crew pulled off the ultimate underdog win at the 1936 Olympics in Nazi Germany — the achievement celebrated in the brand-new movie adaptation of “The Boys in the Boat.”

On paper, the performance of the rowers at the center of the movie — and at the center of the bestselling book on which the movie is based — pales in comparison with current Olympic and world records. Today, the world’s fastest time for a 2,000-meter course is just under 5 minutes and 20 seconds, which is more than a minute faster than the time that won the gold medal for the Boys in the Boat in Berlin.

One of the big reasons for that speedup can be found at Everett, Wash.-based Pocock Racing Shells. The company’s founder, George Pocock, built the Husky Clipper — the boat in which the Boys won their Olympic gold. In the movie, Pocock (as portrayed by Peter Guinness) plays a role similar to Yoda in the Star Wars saga, performing wizardry with wood and dispensing wisdom at just the right moment.

Today, wood just doesn’t cut it for championship-level racing shells. “The boats have no wood,” says John Tytus, the current president of Pocock Racing Shells. “These boats are all built out of advanced composites, mainly carbon fiber — which, for its weight, is the strongest material available.”

Lightweight materials are just part of the equation. Hydrodynamics and computer modeling have helped Tytus and other boatbuilders tweak their designs to an extent that would impress even George Pocock.

Science has also transformed how today’s rowing men and women are being trained to outperform the Boys in the Boat. “As stark as the difference between wood and carbon fiber might be, the training volume that the crews do now, compared to what the Boys did in ’36 — that’s actually a bigger quantum leap,” Tytus says.

In the latest episode of the Fiction Science podcast, Tytus explains how innovations have taken athletic performance far beyond what moviegoers see when they watch “The Boys in the Boat.”

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Scientists team up to turn cells into tiny recording devices

A small section of a cell lineage map produced using DNA Typewriter. (Allen Institute / UW Image)

The Allen Institute, the Chan Zuckerberg Initiative and the University of Washington have launched a collaboration called the Seattle Hub for Synthetic Biology, with the goal of using genetically modified cells to capture a DNA-based record showing how they change over time.

If the project works out as hoped, it could lead to a deeper understanding of the mechanisms behind cellular processes — including, for example, how tumors grow — and point to new methods for fighting disease and promoting healthy cell growth.

Over the next five years, the Seattle Hub for Synthetic Biology will receive $35 million from the Allen Institute, and another $35 million from the Chan Zuckerberg Initiative, founded by Meta CEO Mark Zuckerberg and his wife, Priscilla Chan.

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